Ice-cream freezer



June 1929- M. A. ROLLMAN 1 71 ICE CREAM FREEZER Filed Aug. 1, 1925 Patented June 4, 1929.

UNITED STATES MICHAEL A. ROLLMAN, OF MOUNT JOY, PENNSYLVANIA.

ICE-CREAM FREEZER.

Application filed August 1, 1925. Serial No. 47,626.

The object of this invention is to simplify and improve the structure, as hereinafter more fully set forth.

In the drawing: 7

Fig. 1 is a perspective view of an ice cream freezer embodying my invention;

Fig. 2 is a vertical sectional view thereof;

Figs. 3, 4L and 5 are .detail views hereinafter described.

Referring to the drawing annexed, 10 designates the bottom of the ice-bucket. This bottom is made of asingle piece of metal pressed into shape, with the cream-can bearing 11 formed integral therewith. The edge of the disk bottom is set in an internal annular groove in the bucket-staves. The advantage of this type of bottom is that I avoid the use of a separate bearing or spud for the cream-can. In the usual construction, the

bucket is provided with a wooden bottom,

and the spud or bearing is riveted thereto. This is a comparatively expensive manner of making the bottom and, besides, it results in elevating the cream-can. My present idea of making the bottom of 'a single piece with the cream-can spud integral results in economy of manufacture as well as a high degree of durability and in bringing the cream-can nearer to the bottom.

The gearing for driving the dasher through the medium of its upstanding squared shaft 12 and the cream-can 13 through its upstanding squared lug 14 is substantially the same as in my former Patent No. 1,490,7 86, dated April 15, 1924. This gearing consists of a handcrank shaft 15 journalled in a depending lug on the bridge-plate 16 carrying a pinion 17 at its inner end. The inner end of the shaft 15 is journalled on one of the vertical rods and a gearing frame 18 depending from the bridge-plate 16. The lower edge of the driving pinion 17 meshes with a gear 19 Whose squared center fits over the squared lug 1 1 on the cream-can cover. The upper edge of the pinion 17 meshes with a gear 20 which drives the dasher 12 in a direction opposite to the cream-can in the usual manner. The connection between the gear 20, which is arranged just under the bridge-plate 16, with the dasher-shaft 12 is by means of a hollow cylinder 21 afiixed in a central hole in the gear 20 (virtually forming the hub of this gear) and a disk 22 afiixed in the lower end of said cylinder 21 and provided with a central hole for engagement with the dasher-shaft 12.

The lower end of the tubular hub 21 is journalled in a central depression in the lower gear 19, and the disk 22 is aliixed to the cylinder 21 by having its annular edge fitted into an annular bead formed in said cylinder near the lower end thereof. The upper end of the cylinder hub 21 is closed by a cap 23 which is cupped or dished upwardly toform a shaft-like extension working in a journalhole in the bridge-plate 16. served that rotation of the gear 17 drives the dasher-shaft in one direction and the creamcan in the other direction, as usual in this type of freezer. The main advantage of this construction is that it enables me to materially shorten the shank 12 of the dasher-shaft, so that in swinging the bridge-plate upwardly to remove the gearing from the tub, the likelihood of the part 22 gripping the dasher-shaft and pulling out the dasher is eliminated. In freezers of this type heretofore, the shank 12 of the dasher-shaft extends up as high as the bridge-plate and this, in view of the short are on which the bridge-plate must turn in removing it from the bucket, occasionally causes the member 22 or its equivalent to grip the dasher shank and lift it out of the cream-can together with the cover of the cream-can; in my present construction, the shortness of the shank 12 enables the bridge-plate to be quickly removed without any fear whatever of carrying with it the dasher. Also, the return of the gearing to operative position is rendered much easier. It is desirable that the disk 22 be concaved on its under side to facilitate entry of the shank 12 into the hole 23 when the gearing is returned to operative position.

The gearing bridge-plate 16 has a pair of lugs at one end engaging ears on the bucket, and at its other end it is notched at 24 to fit down over a fastening-lug 25 carried by the tub, a pivoted latch-plate 26 being employed to lock the bridge-plate down on the rim of the tub. Lateral shifting of the bridge-plate on the tub is provided against by the depending flanges 27 on the bridge-plate and the lugs atthe pivotal end of the bridge-plate, as

It will be obusual. In this structure, I provide for locking irrespective of whether the opposite end of the bridge-plate abuts against the bucket ears or not. In this way, the bridge-plate is locked rigidly against endwise movement, even tho the opposite end of the bridge-plate does not abut against the rigid ears, as is sometimes the case where the buckets vary in diameter on the lme of the bridge-plate.

It desirable that the journal-cap 23 shall be secured to the cylinder by means of a bead 29 formed on the cylinder and in pos1- tion to receive a corresponding bead on the lower edge of the cap. It is also desirable that the disk 22 shall be secured in its head in the cylinder by means of a tongue 30 formed on the edge of the disk in position to enter a hole 31 formed in the bead, thus assisting the bead in locking this disk to the cylinder.

iVhat I claim as new is:

1. In an ice-cream freezer, a gearing for ac tuating the cream-can in one direction and the dasher in the opposite direction embodying a frame, a driving pinion, two gears both journalled on the frame and engaged by the pinion, the lower gear being in engagement with the cream-can and the upper gear beingin engagement with the projecting angular end of the dasher-shaft, the means for accomplishing this latter engagement embodying a tubular member carried by said upper gear and having its lower end journaled in the lower gear and supported thereby. l

2. A gearing for ice-cream freezers em bodying a driving pinion, an upper gear in engagement with the upper edge thereof, a lower gearing engaging the lower edge of the pinion and having an angular eye forengage;

ment with the cream-can lug, the upper gear being provided with a depending tubular hub journalled on the lower gear and carrying an internal diskat its lower end having an angular opening for engagement with the upstanding shank of the dasher.

8. A gearing for ice-cream freezers embodying a driving pinion, an upper gear in engagement with the upper edge thereof, a lower gearing engaging the lower edge of the pinion and having an angular eye for engagement with the cream-can lug, the upper gear being provided with a depending tubular hub journalled on the lower gear and carrying an internal disk at its lower end having an angular opening for engagement with the upstanding shank of the dasher, said internal disk having a conveXed under side and being beaded into the cylindrical hub.

4. A gearing fOnice-cream freezers embodying a driving pinion, an upper gear in engagement with the upper edge thereof, a lower gearing engaging the lower edge of the pinion and having an angular eye for engagement with the cream-can lug, the upper gear being provided with a depending tubular hub journalled on the lower gear and carrying an internal disk at its lower end having an an gular opening for engagement with the up standing shank of the dasher, said cylindrical hub having its upper end closed by a cap affixed to the cylinder and journalled in a hole in the bridge-plate which carries the gearing.

In testimony whereof I hereunto afiix my signature.

MICHAEL A. ROLLMAN. 

